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Create FieldMappingWrapper
This commit is contained in:
arnaud.morvan@camptocamp.com
volaya
parent
affc8f7ca5
commit
a38c13d523
@ -37,8 +37,6 @@ from processing.core.outputs import OutputVector
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from processing.tools import dataobjects, vector
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from .fieldsmapping import ParameterFieldsMapping
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from .ui.FieldsMapperDialogs import (FieldsMapperParametersDialog,
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FieldsMapperModelerParametersDialog)
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class FieldsMapper(GeoAlgorithm):
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@ -151,9 +149,3 @@ class FieldsMapper(GeoAlgorithm):
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raise GeoAlgorithmExecutionException(
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self.tr('An error occurred while evaluating the calculation'
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' string:\n') + error)
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def getCustomParametersDialog(self):
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return FieldsMapperParametersDialog(self)
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def getCustomModelerParametersDialog(self, modelAlg, algName=None):
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return FieldsMapperModelerParametersDialog(self, modelAlg, algName)
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@ -33,6 +33,10 @@ from processing.core.parameters import Parameter
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class ParameterFieldsMapping(Parameter):
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default_metadata = {
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'widget_wrapper': 'processing.algs.qgis.ui.FieldsMappingPanel.FieldsMappingWidgetWrapper'
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}
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def __init__(self, name='', description='', parent=None):
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Parameter.__init__(self, name, description)
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self.parent = parent
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@ -1,143 +0,0 @@
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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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FieldsMapper.py
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---------------------
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Date : October 2014
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Copyright : (C) 2014 by Arnaud Morvan
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Email : arnaud dot morvan at camptocamp dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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from builtins import str
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__author__ = 'Arnaud Morvan'
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__date__ = 'October 2014'
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__copyright__ = '(C) 2014, Arnaud Morvan'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from qgis.PyQt.QtWidgets import QComboBox, QSpacerItem
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from processing.core.parameters import ParameterVector
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from processing.tools import dataobjects
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from processing.gui.ParametersPanel import ParametersPanel
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from processing.gui.AlgorithmDialog import AlgorithmDialog, AlgorithmDialogBase
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from processing.modeler.ModelerParametersDialog import ModelerParametersDialog
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from processing.algs.qgis.fieldsmapping import ParameterFieldsMapping
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from .FieldsMappingPanel import FieldsMappingPanel
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class FieldsMapperParametersPanel(ParametersPanel):
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def __init__(self, parent, alg):
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ParametersPanel.__init__(self, parent, alg)
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item = self.layoutMain.itemAt(self.layoutMain.count() - 1)
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if isinstance(item, QSpacerItem):
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self.layoutMain.removeItem(item)
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item = None
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def getWidgetFromParameter(self, param):
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if isinstance(param, ParameterFieldsMapping):
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item = FieldsMappingPanel()
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if param.parent in self.dependentItems:
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items = self.dependentItems[param.parent]
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else:
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items = []
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self.dependentItems[param.parent] = items
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items.append(param)
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parent = self.alg.getParameterFromName(param.parent)
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if isinstance(parent, ParameterVector):
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layers = dataobjects.getVectorLayers(parent.shapetype)
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else:
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layers = dataobjects.getTables()
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if len(layers) > 0:
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item.setLayer(layers[0])
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return item
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return ParametersPanel.getWidgetFromParameter(self, param)
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def updateDependentFields(self):
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sender = self.sender()
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if not isinstance(sender, QComboBox):
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return
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if sender.name not in self.dependentItems:
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return
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layer = sender.itemData(sender.currentIndex())
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children = self.dependentItems[sender.name]
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for child in children:
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widget = self.valueItems[child.name]
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if isinstance(widget, FieldsMappingPanel):
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widget.setLayer(layer)
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ParametersPanel.updateDependentFields(self)
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def somethingDependsOnThisParameter(self, parent):
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for param in self.alg.parameters:
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if isinstance(param, ParameterFieldsMapping):
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if param.parent == parent.name:
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return True
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return ParametersPanel.somethingDependsOnThisParameter(self, parent)
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class FieldsMapperParametersDialog(AlgorithmDialog):
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def __init__(self, alg):
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AlgorithmDialogBase.__init__(self, alg)
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self.alg = alg
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self.setMainWidget(FieldsMapperParametersPanel(self, alg))
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def setParamValue(self, param, widget, alg=None):
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if isinstance(param, ParameterFieldsMapping):
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return param.setValue(widget.value())
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return AlgorithmDialog.setParamValue(self, param, widget, alg)
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class FieldsMapperModelerParametersDialog(ModelerParametersDialog):
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def __init__(self, alg, model, algName=None):
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ModelerParametersDialog.__init__(self, alg, model, algName)
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paramsLayout = self.paramPanel.layout()
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item = paramsLayout.itemAt(paramsLayout.count() - 1)
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if isinstance(item, QSpacerItem):
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paramsLayout.removeItem(item)
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item = None
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def getWidgetFromParameter(self, param):
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if isinstance(param, ParameterFieldsMapping):
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return FieldsMappingPanel()
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return ModelerParametersDialog.getWidgetFromParameter(self, param)
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def setPreviousValues(self):
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ModelerParametersDialog.setPreviousValues(self)
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if self._algName is not None:
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alg = self.model.algs[self._algName]
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for param in alg.algorithm.parameters:
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if isinstance(param, ParameterFieldsMapping):
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widget = self.valueItems[param.name]
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value = alg.params[param.name]
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if isinstance(value, str):
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# convert to list because of ModelerAlgorithme.resolveValue behavior with lists
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value = eval(value)
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widget.setValue(value)
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def setParamValue(self, alg, param, widget):
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if isinstance(param, ParameterFieldsMapping):
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# convert to unicode because of ModelerAlgorithme.resolveValue behavior with lists
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alg.params[param.name] = str(widget.value())
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return True
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return ModelerParametersDialog.setParamValue(self, alg, param, widget)
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@ -31,13 +31,14 @@ import os
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from collections import OrderedDict
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from qgis.PyQt import uic
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from qgis.PyQt.QtGui import QBrush, QIcon
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from qgis.PyQt.QtGui import QBrush, QIcon, QSpacerItem
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from qgis.PyQt.QtWidgets import QComboBox, QHeaderView, QLineEdit, QMessageBox, QSpinBox, QStyledItemDelegate
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from qgis.PyQt.QtCore import QItemSelectionModel, QAbstractTableModel, QModelIndex, QVariant, Qt, pyqtSlot
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from qgis.core import QgsExpression, QgsExpressionContextUtils, QgsApplication
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from qgis.core import QgsExpression, QgsExpressionContextUtils, QgsApplication, QgsFeature
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from qgis.gui import QgsFieldExpressionWidget
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from processing.gui.wrappers import WidgetWrapper, DIALOG_STANDARD, DIALOG_MODELER
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from processing.tools import dataobjects
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pluginPath = os.path.dirname(__file__)
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@ -93,7 +94,7 @@ class FieldsMappingModel(QAbstractTableModel):
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if self._layer is None:
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return
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context = QgsExpressionContextUtils.createFeatureBasedContext(QgsFeature(), self._layer.fields())
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for feature in dp.getFeatures():
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for feature in self._layer.getFeatures():
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context.setFeature(feature)
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expression.evaluate(context)
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if expression.hasEvalError():
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@ -473,3 +474,35 @@ class FieldsMappingPanel(BASE, WIDGET):
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if layer is None:
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return
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self.model.loadLayerFields(layer)
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class FieldsMappingWidgetWrapper(WidgetWrapper):
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def createWidget(self):
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return FieldsMappingPanel()
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def postInitialize(self, wrappers):
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for wrapper in wrappers:
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if wrapper.param.name == self.param.parent:
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wrapper.widgetValueHasChanged.connect(self.parentLayerChanged)
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break
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layers = dataobjects.getTables()
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if len(layers) > 0:
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# as first item in combobox is already selected
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self.widget.setLayer(layers[0])
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# remove exiting spacers to get FieldsMappingPanel fully expanded
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if self.dialogType in (DIALOG_STANDARD, DIALOG_MODELER):
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layout = self.widget.parent().layout()
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spacer = layout.itemAt(layout.count() - 1)
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if isinstance(spacer, QSpacerItem):
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layout.removeItem(spacer)
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def parentLayerChanged(self):
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self.widget.setLayer(self.sender().value())
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def setValue(self, value):
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self.widget.setValue(value)
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def value(self):
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return self.widget.value()
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